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Register a new userتوصيف بعض الخصائص الرطوبية للتربة القرفية وطبيعة ابتلالها عند الري بالتنقيط
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Damascus University رسالة ماجستير
Publication date
2014
fields
Agricultural Engineering
and research's language is
العربية
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باتت طريقة الري بالتنقيط من اهم طرائق الري الحديث المستخدمة على اغلب المحاصيل المزروعة في محافظة درعا والتي تسود فيها التربة القرفية .
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References used
فارس فاروق 1992 أساسيات عم الاراضي منشورات جامعة دمشق كلية الهندسة الزراعية
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The study was carried out at Soil Research Center in the province of Daraa
during 2011 in order to study some physical and moisture characteristics for
cinnamon soil, which occupies (48000 km²), equivalent to 26% of the area of the
Syrian Arab Rep
ublic and represents the cultivation of growing field crops
with a rainfall ranges between 150- 300 mm. The results showed that the
mechanical analysis for soil referred that its texture is clay with a good ability
to retain water, the field capacity rated between (30-38.85)%. The studied soil
has high value of available water (38.93mm) and useful water (25.69mm) in the
surface layer. The highest value of permanent wilting point and hygroscopic
moisture was reached in the final depth in studied profile soil, It was also
distinguished a high total porosity ranged between 51.78 and 55.59% with
a good air porosity amounted to 9.38 - 15.47 % in different depths and with the
decline to 5.51 % in the depth 30 - 45cm.
The experiment carried out to improve the efficiency of drip
irrigation system , based on soil moisture. The indirect measure of
humidity Was used in the experiment, connected with the pointing
device (separator continued), and a control device pr
ogrammed on a
low humidity degree, which is degree the field capacity of the soil and
which value is 25%, and on a high moisture degree which is saturation degree
at 75%..
This study was conducted at the Faculty of Agriculture, Damascus
University, during two seasons (2002-2003) to assess the effect of irrigation
methods (drip, sprinkler, furrow) of maize (Gota 82). The results showed
significant differences between
irrigation methods in grain and green weight
production (average of two seasons, for grain: 6.48 t/ha,6.065 t/ha, and 7.905
t/ha for drip, sprinkler and furrow irrigation respectively, and for green
weight 24.4t/ha, 22.04t/ha, and 25.75t/ha for drip, sprinkler and furrow
irrigation respectively).Concerning total water requirement, drip irrigation
method was the lowest one (average of two seasons, 4392.87m3/ha) followed by
sprinkler irrigation (5565m3/ha) compared with furrow irrigation
(9011.92m3/ha).
A field experiment was carried out to investigate the effects of organic
fertilizers (mushroom substrate residues, poultry manure and city compost)
and mineral fertilizers (NPK) on some properties and productivity of a
calcareous soil using chard
(Beta vulgaris) as a test crop. The plant was
cultivated at spring season 2009. The first cut was after 60 days of swing. The
results of experiment were: The NPK fertilizer significantly affected dry weight
of plant yield (157.6g/m2soil) and the efficiency of fertilizer in productivity was
50.8% compare to control (104.5g/m2soil). The treatment of 50% NPK + 50%
poultry manure gave the highest yeld compare to other treatments. However
the organic treatments did not differ significantly among them. Concentrations
of NPK nutrients in plant leaves were as follows: NPK > 50% NPK + 50%
poultry manure > poultry manure > 50% NPK + 50% mushroom substrate >
mushroom substrate > 50% NPK + 50% city compost > city compost. The
organic fertilizers decreased the NPK in plant and soil compare with NPK
fertilizer treatment. However there was no significant differences between NPK
treatment yield and 50% NPK + 50 % poultry manure treatment. It was
concluded that the use of 50% NPK +50 % orgnic fertilizer (specially poultry
manure) was important to get best result.
The research was carried out at Al-Qamishli Agricultural Research Center, GSAR,
Syira, during the seasons 2011, 2012 and 2013, in order to estimate the effect of
adding different levels of a crude Zeolite (T2-20 tons/ha, T3- 40 tons/ha, in addition
to the control (without adding Zeolite T1), on wheat productivity within a bilateral
crop rotation was followed, consisted of wheat and chickpea, and on the content of
nitrogen, phosphorus and potassium in the surface layer of the soil .The research
was conducted using Complete Randomized Block Design with three replicates.
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